Improvement in liquid-meters



' UNITED STATES PATENT .OEEICEQ DAVID WILLIAMSON, OF NEW YORK, N. Y.,ASSIGNOR TO HIMSELF ANI) EUGENE BISSEL, OF SAME PLACE.

IMPROVEMENT IN LIQUID-METERS.

Specification forming part of Letters Patent No. 117,229, dated July 18,1871.-

T0 all whom it may concern:

Be it known that 1, DAVID WILLIAMSON, of the city and State of New York,have invented -an Improvement in Meters for Liquids or Fluids;

andthe following is declared to be a correct description thereof'.

This invention relates to an eight-way double cylindrical cock, appliedto and combined with the pistons or swinging wings of a water-meter. Ihave illustrated my invention in connection with swinging wings in adouble segmental case,

y the eight-way cock being applied at the center of the case. Thiseight-way cook is made of two cylinders, one within the other, soconstructed with slots or ports andinoved by the pistons or wings thatwhen one of the wings is nearing the end of its movement the cylinder ofthe cock is turned so as to open the supply and exhaustports to theother wing without altering the position of its own ports, so that theiirst piston must complete its stroke and will cause the second pistonto be moved, but when the second piston nears its extreme movement itchanges the supply and exhaust-ports of the first piston withoutchanging its own ports; thus, while ea ch piston is obliged to make itscomplete movements, and thus register the quantity of water correctly,the motion of the cock to change the port does not come from the pistonwhose ports are to be changed, but from the other one. This preventsinaccuracy of registration, or the possibility of the meter stopping atany point where the water could be shut oft' entirely, or where it couldrun through without registration.

In the drawing, Figure l is a plan of the meter, with one head removed.Fig. 2 is a vertical section at vthe line w and the other figures aredetached views of the cylinders in their various positions.

The case of the meter is made of the cylindrical segments a and b, withabutments o and d between them, and centrally to these segments are thetwo cylinders e and i, forming, by their slots or ports, an eight-waycock. The pistons or swinging wings g and h are made with ring-straps la passing around the respective cylinders e fi, and in these ring-strapsslots or notches may be introduced, and upon the cylinders e t' areblocks or studs entering these slots, and the length of these slots issuch that the wing will swing without moving its cylinder until it comestoward the latter part of its movement, and then the part of the ring atthe end of the slot, taking the stud, moves the cylinder sufficiently tochange the position ofthe ports for the opposite side of the meter.These slots only lessen the movement of the cylinders e 1'., and theymay be of greater or lesser length, according to the extent oflnovementrequired. The liquid or fluid is introduced at one end of the cylinder iby the pipe m, and passes away by the pipe u1 from the opposite end ofsaid cylinder fi, there being a diaphragm or partition, 02.2, in saidcylinder fi, so that the water has to go into and out of the segmentalcase, and hence move the pistons or wings. In the cylinder e are eightopenings or ports, numbered l 2 3 4, which are outlet orinduction-ports, and 5 o' 7 S, which are inlet-ports. In the cylinderare three induction-ports, 9 l() 1l, and two eduction-ports, 12 and 13.The piston h moves the cylinder e at the extremes of its motion, and inso doing lets the water into or out of the segmental case a to move thepiston g.

The abutments c d act as cut-offs, and the operation is as follows:Starting with the parts in the position shown in Figs. 3 and 4, thewater is passingthrough the pipe m and cylinder i, and away by the ports9 and 8, to move the piston g inthe direction indicated by the arrow,the portsdOV and 6 being also open to allow water to iill the case b.The piston g, moving, forces the water in front of it out through thepassage in the abutment d, and away by the ports 3 and 13 and pipe nl,below the diaphragm n2. reaches its extreme movement the cylinder12a-receives a partial rotation by means of the slot in the ring Zacting upon the pen 24, which brings the parts to the position shown inFigs. 5 and 6, in which the ports 5 and l() are open, to allow water topass behind the piston h and force said piston in the directionindicated by the arrow, and the water in the case b is forced throughthe ports 2 and 13 and away by the pipe fnl. The ports 9 and 3 are alsoopen to allow water to continue to ill the case af. Before the arm hreaches its extreme movement the slot in the ring u acts upon the pin 25and moves the cylinder e to the position shown in Figs. 7 and 8, so asto open the ports 7 and 11 and allow the water to act against the pistong and give it its return movement, and force the water in the case c outthrough the passage in the abutment c and Before the arm g away by theports 4 and 12 and pipe al. The piston g in moving will bring thecylinder i back to the position shown in Figs. 3 and 4, so as to bringthe ports into position to allow the piston hA to receive its returnmovement, and said piston L in its return movement will return thecylinder c to the position also shown in Figs. 3 and 4, when theoperation of the parts will be a repetition of the above.

I claim as my inventionl. Two cylinders, moving one Within the other,

Y and provided with induction and eduction-ports,

and connected with two moving pistons or Win gs, substantially as setforth, so that the induction

